Dust collector



Septo 28 1926.

A. A. SERVA DUST COLLECTOR 2 Sheets-Sheet. l

Filed Jan. 26 1924 K g1/uvam* o@ A. Sama whm/fi www@ sept. 28 1926.

A. A. SERVA DUST COLLECTOR Filed Jan. 26. 1924 2 Sheets-Sheet 2 mansrATas ADAM A. SERVA, OF CANTON, OHIO, SiSIGNOE TO THE UNITED ELECTRICCOMPANY,

OF CANTON', OHIO,l A CORPORATION OF OHIO.

DUST COLLECTOR..

Application led January 26, 1924. Serial No. 688,717.

i This invention relates to improvements iny an upright bag, which maybe pervious, to

permit the heavy dirt and dust which enll@ ters the manifold to settlein the lower portion of the bag while 'the air may escape throughthewalls of the bag.

The above and other objects may be attained by providing avertical baginto the l middle portion of which is extended a T- elbow leadingfromthe outlet of the :fan chamber, the opposite ends of theT-elbow, thestem of which is flared from the fan casing, being directedtoward theends of the b practical embodiment of the invention is illustrated inthe accompanying drawings, in which-e Figure 1 is a side elevation of avacuum cleaner of the truck type', provided with the improved dustcollector,`one'wheel of Athe truck being removed for the purpose ofillustration v Fig. 2, a section on the line 2 2, Fig. 1;

Fig. 3, a view similar to Fig. 2, showing a modified form of connectionbetween the fan chamber and bag;

Fig. 4, a detached, perspective View of the clampl for the lower end'ofthe bag;

Fig. 5, a side elevation of the ag, parts vbeing broken awaytofillustrate the T-elbow which is shown in section; Fig. 6, a viewsimilar to Fig. 5, showing the bag clamped around the upper end of theT-elbow;

Fig. 7, a side elevation of a modied form of bag having straight sides;and

Fig. 8, a detail front elevation of the cor? set for protecting themiddle portion cf the 1 let 3, to which may be attached a hose hav;l

.surface to be cleaned.

aimilar numerals indicate corresponding ing a nozzle or cleaning tool ofany accepted type for engagement with the floor or other This tankcommunicates in usual manner with the fan chamber 4, in which is mounteda rotary suction fan of usual construction, driven by the motor 5. Thismuch of the construction may be varied, and in its details forms no partof the present invention.

To the out-let neck 6, or 6a of the fan chamber is attached an elbow 7yor 7c, to the rear end ofhwhich is connected, as by the bayonet swivelshown, the reduced extremity of the stem of the T-elbow 8, the enlargedT-head 9 thereof being preferably located in the longitudinal center ofthe device as shown in Figs. 2 and 3.

rlhis T-elbow is extendedinto the middle portion4 of an vupright dustcollector bag 10 or 10, preferably at a point slightly below the centerof the bag, as shown in the drawings. A neck 11 or 11a may be formed inthe middle portion of the bag to receive the T- elbow, a clamping ring12 or they like, being provided around said neck for securing the sameupon the elbow.

The truck may be arranged to bemanu'ally propelled over the floor bymeans of a U- shaped handle 13, connected at its forward ends to thetank or other portion of the truck and straddling the dust collectorbag, with a bracket 14 mounted upon said handle enga ing the loop 15 at'the upper endof the vclamping bolt 17 and wing nut 18.

A. swivelled front castor 19 may be provided for supporting the forwardportion of the truck and assisting in steering the same as it ispropelled across the door.

The dust collector bag may be reduced atits central portion as 'shown inFigs. 5 and 6, and if desired, a ring 2O may be pro'- vided to bind thisreduce portion of the bag to the vertical portion o the T-elbow.

be might from ap a The bag may bottom as shown in Fig. 7, the T-elbo/Wbeing spaced from the side walls thereof, permitting dirt and dust topass downward from the upper portion of the bag around the outside ofthe T-elbow without interference from the air blast discharged throughsaid elbow. l

For the purpose of su porting the reduced middle portion of t e bag asshown in Fig. 5. a corset 21 maybe provided around the same. This corsetmay be formed of pervious material, such as wire mesh or perforate sheetmetal, split vertically upon its front side as shown at 22, and providedwith the split nipple 23 surrounding the stem of the T-elbow.

As shown in Fig. 5, a concavo convex shield 25 may be provided in theupper end of the bag to prevent the same from collapsing, this shieldbeing connected in any suitable manner to the loop 15 by which the bagis supported.

This dome shield extends a substantial distance down around and withinthe sides of the bag to distend the same, is preferably pervious, beingformed of wire mesh, perforate sheet metal or the like, in order topermit the air to pass freely through this portion of the wall of thebag.

The dust laden air which is expelled from the fan chamber expands as itpasses through the flared T-elbow, to reduce the pressure gradually asthe air passes from the exhaust of the fan chamber through the enlargedvertical portion of the T-elbow.

The air entering the vertical portion 9 of the T-elbow will exhaustupward and downward, the heavier dirt dropping into the lower ortion ofthe dust collector bag, while only t e 1i hter particles of the dustwill pass upwar into the upper portion of the bag, the air escapingthrough the walls thereof; and the lighter dirt which is carried intothe upper portion of the bag will later drop around the outside of theT-elbow into the lower portion of the bag.

The T-elbow serves not only as a support by which the middle portion ofthe bag can.

be attached to the exhaust pipe of the cleaning machine, but it alsoserves as a shield to prevent the dust and dirt laden air from impingingand cutting out the side wall of the bag, until after it has beendeflected either upward or downward into the end portion of the bag.4

The upper portion of the bag may be shaken or tapped at any time,causing all of the fine dust 4which mav adhere to the walls of the upperportion of thebag, to fall into the bottom of the bag, which may beeasily opened and emptied whenever necessary by merely removing theclamp 16.

I claimz- 1. In a vacuum cleaner or the like, an exhaust manifold arraned to discharge in opposite directions, and a dust bag surroundingr themanifold and spaced therefrom with its end ortions extending in thedirections of disc arge.

2. In a vacuum cleaner or the like, an exhaust manifold arranged todischarge in diiferent directions, a dust bag surrounding the manifoldwith its end portions extending in the directions of discharge, and acorset surrounding the middle portion of the dust bag.

3. In a vacuum cleaner or the like, an exhaust manifold arranged todischarge in different directions, a dust bag surrounding the manifoldwith its end portions extending in the directions of-discharge, saiddust bag being reduced at its middle portion, and a corset surroundingthe reduced portion of the dust bag. l

In testimony that I claim the above, I have hereunto subscribed my name.

ADAM A. SERVA.

